Device for transmitting power from car-axles.



' Nb. 721,309. v PATENTED'FEB. 24, I903.v

- '1). E, JOHNSON.

DEVICE FOR TRANSMITTING POWER FROM OAR AXLES.

APPLICATION FILED APR. 25. 1902.

no MODEL.

.Zhvenor I UNITED STATES PATENT OFFICE.

DELBERT E. JOHNSON, OF CHICAGO, ILLINOIS.

DEVICE FOR TRANSMITTING POWER FROM. CA R-AXLES.

I SPECIFICATION forming part of Letters Patent No. 721,309, dated.February 24, 1903.

Application filed April 25, 1902. $erial No. 104,664. (No model.)

To all whom it may concern: I

Be it known that I, DELBERT E. JOHNSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Devices for TransmittingPower from Oar-Axles, of which the following is a specification,reference being had to the accompanying drawings, forming a partthereof.

The purpose of this invention is to provide an improved means fortransmitting power from the axle of a car-wheel to any devicerequiringpower on or in the car.

It consists in the features of construction and relative location andarrangement of pulleys on the car-axle and on the power-transmittingdevice,which are set out in the claims, and, specifically, theadaptation of the devices shown to operate a fanfor the purpose ofpneumatic transmission of energy to points within the car.

The car-truck is represented in a conventional form by the frame-bars 11, &;c., and bolster-beam 2, the vertical axis of the truck beingindicated by the position of the kingbolt 3. On one of the axles,preferably the innermost axle of the truck, as 4, I mount a pulley 5,whose face is curved in radial section about the vertical axis of thetruck. Preferably, as illustrated, the radius of curvature is thedistance from the vertical axis to the remote periphery of the pulley,so that said pulley has its face convex outward, as seen at 6. If theconstruction of the truck were such as to make it feasible to mountgthepower-transmittin g device so as to take power from the inner side ofthe pulley that is, the side toward the other axle of the truck-thecurvature would be still about the same center, but with a radiusreaching only to the.

proximate instead of the remote face, and

said face would then manifestly be concav having journaled in it apulley 10, whose periphery is in position to bear against the convexperiphery of the pulley 6, the axis of said pulley 1O being,withslight range of variation, substantially at the horizontal plane of theaxle 4. I provide suitable means for communicating power from the pulley10 to the shaft 8. The most simple construction and suitable for manypurposes is that shown in the drawings, in which, on the shaft 8, thereis a friction-pulley 11, which is held in driving contact with thepulley 10. A spring 12, connected to the hanger 9 and to a fixedattachment on the car-body, as the bracket 13, .opcrates with a tendencyto hold the pulley 10 in contact with the convex face 6 of the pulley 5in such oscillation of the hanger as may be necessary to maintain suchcontact throughout any longitudinal shifting of the car-body withrespect to the truck. The pulley 10 will maintain its contact with thepulley 11 throughout such oscillation of the hanger, because the hanger9 is fulcrumed about the shaft of said pulley. The pulley 5 ispreferably and for practical purposes almost necessarily located at themiddle point in the length of the axle-that is, in the longitudinalplane ofthe vertical axis of the truck.

Whether in this position or not its face will I be curved, as stated,about the said vertical axis. When it is in the middle position,suchcurvature makes it symmetrical about the vertical longitudinalcentral plane of the truck and the car, as shown in the drawings.

It will be seen that with this construction the change of relativeposition of truck and carbody which is caused in passing curves,requiring the, truck to swivel with respect to the car about itsvertical axis, only causes the pulley lOto bear upon a different pointin the curved face 6 of the pulley 5, but does not tend to take it outof contact or cause it to operate otherwise than with the directrollving action by which the movement of the fonepulley may betransmitted to the other with the minimum friction and without thefriction or rubbing which would result from any distorted relation ofthe two pulleys. It

, will be seen also that the driving action will relative position beingcompensated constantly by the action of the spring 12.

In the drawings I have shown the mechanism which I have above describedin general terms in a specific form, in which the shaft 8 is that of afan which is to be operated to transmit energy pneumatically into thecar, the hanger 7 being therefore in form to constitute, comprise, orsupport the fan-case, which is specifically indicated at 14. Thisfan-case is symmetrical about the vertical plane in which its axis lies,so that it may be arranged to have a circumaxial intake at each side anda peripheral discharge sustaining the same relation to the fan whetherthe latter rotates in one direction or the other.

15 is the fan; 16, the discharge-mouth of the fan-case.

The hanger 9 for the pulleylO is preferably made in two parts, the upperof which is directly fulcrumed on the hanger 7 at the hub of thefan-case in which the shaft 8 is journaled, while the lower member 17,having a square stem 18, which extends up through the sleeve 19 of saidupper member and is apertu red at 24 around the shaft 8, has .the

bearings for the pulley 10, which is by this construction adapted to beheld in driving contact with the pulley 11 by means of a spring 26 onthe upper end of the stem of said lower member, where it protrudes abovethe end of the sleeve 19, a nut 20 above the spring being employed toadjust its tension as may be found necessary. The fan-case has two arms21 and 22, which fork to embrace the fan-chamber between them and makeconnection with the same at the center at opposite sides for the purposeof supplying air at the two central inlets at said sides respectively,and said arms, together with a trunk 25, extending from their junction,are hollow, said trunk being mounted on the car-body, so arranged thatits end at which it is attached to the latter communicates through theframe or casing of the car to the interior of the latter, so that theair may be drawn from Within the car, and, specifically, from anyparticular chamber, cavity, or passage therein, to supply the fan, andthe fan and the discharge-mouth 16 of the fan, around which theattachment of the hanger to the car-body is made, in like mannercommunicate with the interior of the car. It will be seen that thisconstruction makes it possible to connect the hollow hanger, whichconstitutes the inlet-duct, and the discharge-mouth, which constitutesthe discharge-duct, of the fan to the same chamber or device, throughwhich the fan will then maintain a continuous circulation for anypurpose for which it may be desired, whether to develop motive power orfor the mere purpose of the circulation itself.

I claim 1. In combination with a car, a pulley on one axle, a shaftjournaled on the car-body for transmitting power to mechanism on thecar, a hanger pivoted about the axis of such shaft, and afriction-pulley journaled in the hanger and arranged to bear against theaxlepulley, said axle-pulley having its face curved about a center inthe vertical axis of the truck, with a radius equal to the distance fromsaid axis through the axle-axis to the point of contact between saidpulleys.

2. In combination with a car, a pulley on one axle having its facecurved in horizontal axial plane about the vertical axis of the truck, ashaft carried by the car in transmitting power to mechanism thereon, ahanger pivoted about the axis of such shaft, a frictionpulley journaledin such hanger having its axis substantially at the horizontal plane ofthe axle, and means for transmitting motion from such friction-pulley tosaid shaft.

3. In combination with a car, a pulley on one axle, a shaftjournaled onthe car, ahanger pivoted about the axis of such shaft, 3. fric-Lion-pulley journaled in the hanger and arranged to bear against theaxle-pulley, said axle-pulley having its face curved in an axial planethrough the point of contact with the friction-pulley therewith aboutthe point of intersection of such plane with the vertical axis on thetruck, and means for transmitting power from the friction-pulley to saidshaft.

4. In combination with a car, a pulley on one axle having its facecurved in horizontal axial plane about the vertical axis of the truck, ahanger pivotally supported on the car,afriction-pulleyjournaledin suchhanger, and a spring operating on the hanger for holding thefriction-pulley against the axle-pulley, and means for transmittingpower from the friction-pulley to mechanism on the car.

5. In combination with a car, a pulley on one axle, having its faceconvex, with a radius substantially equal to the distance from thevertical axis of the truck horizontally to the remote periphery of suchaxle; a shaft journaled on the car-body for transmitting power tomechanism on the car; a hanger pivoted about the axis of such shaft; afriction-pulley journaled in such hanger, having its axis substantiallyat the horizontal plane of the car-wheel axle, and means fortransmitting motion from such friction pulley to said shaft.

6. In combination with a car, a pulley on one of the axles atsubstantially the middle point of its length, having its face at theside remote from the vertical axis of the truck, convex about said axls;a shaft journaled on the car-body for transmitting power to mechanism onthe car; a hanger pivoted about the axis of such shaft; afriction-pulleyjournaled in the hanger, having its axis substantially atthe horizontal plane of the axle; a spring, operating on the hanger,tending to hold such friction-pulley against the convex face of thepulley on the axle, and a pulley on the shaft by which the latterderives movement from said friction-pulley.

7. In combination with a car, a friction-pul- IIO ley mounted on oneaxle, having its periphery at the side remote from the vertical axis ofthe truck curved about said axis; a shaft journaled on the car-body; ahanger pivoted on the shaft; a friction pulley journaled on the hangerand adapted to bear against the convex-face of the axle-pulley; a springoperating on the hanger, tending to hold said pulleys in contact, and amechanism for developing energy, mounted on the oar-body and operated bysaid shaft.

8. In combination with a car, a friction-pulley mounted on one axle,having its face at the side remote from the vertical axis of the truckcurved about such axis; a centrifugally-discharging fan mounted on thecarbody below the same; a hanger pivoted about the fan-shaft afriction-pulley on the hanger,

In testimony whereof I have hereunto set 7 my hand, at Chicago,Illinois, in the presence 25 of two witnesses, this 3d day of April, A.D.

DELBERT E. JOHNSON.

Witnesses:

OHAs. S. BURTON, I. W. WESTERLAM.

